MR Angiography

MRA (Magnetic Resonance Angiography) is an assembly of testing techniques based on MRI (Magnetic Resonance Imaging) to generate images of blood vessels. A strong magnetic field, radio waves and computer produce the images. MRA may be performed with or without contrast material to enhance the visual of blood flow into the arteries.

An MR angiography is used in the diagnosis and treatment of medical conditions, producing pictures of major blood vessels in body areas as brain, kidneys, pelvis, legs, lungs, heart, neck and abdomen. It can detect 1) diseases and aneurisms of the aorta (chest and abdomen) and other major blood vessels, 2) artherosclerosis in the carotid artery (a condition that could lead to stroke), 3) injury to arteries in trauma patients, 4) endocrine disease or 5) pulmonary embolism (blood clots) in legs.

You may be asked to wear a gown or loose clothing with no metal fasteners. If contrast material is to be used, the technician or a nurse will insert an IV line into the vein of your hand or arm. A saline solution may be injected to clear the line, then the contrast drip will begin.

The doctor or medical technician will leave the chamber during the test but will be nearby, can see, hear, and speak to you. It is important that you remain still while in the tube.

While inside the cylinder, you may hear tapping or thumping sounds. You request earplugs if needed. You should experience little or no discomfort, but if any areas of your body start to feel too warm, tell the technician.

You may be asked to wait until the images are checked before you leave. The IV will then be removed. The exam usually takes 30 to 60 minutes and is done on outpatient basis.

Inform you doctor of any allergies you may have as well as any serious health problems, past surgeries, etc. Tell your doctor if you are pregnant—there have been no ill effects noted since the procedure came into use in the 1980s but every effort is made not to expose the fetus. Also, tell your doctor if you are breastfeeding or are claustrophobic (you may get a sedative in advance.) Tell the doctor if you have artificial valves, a pacemaker, prosthetics, pins or screws, or shrapnel in your body.

Do not wear jewelry, eyeglasses, hairpins, body piercings, dental appliances or other metal. Unless told otherwise, you will follow your regular diet and take routine medications.